MGL B-DOT SENSOR (Free Field)

The MGL (Multi-Gap Loop) B-Dot sensors (Models 1, 2, 6, and 9) are lightweight, portable probes which measure the time rate-of-change of a magnetic field in free space. The probe is a passive device requiring no external power. These sensors have been used extensively in EMP simulation programs.

These sensors are cylindrical loops using four (4), evenly spaced gaps about their circumference. The gap positioning and phase properties produce high frequency characteristics and minimum response to E-field excitation. Cables are attached to each gap and feed the individual gap voltages to a summation point where the voltages are combined in a series - parallel wiring arrangement producing half turn loops that drive the twinaxial output cable. The output cable can exit either along the cylinder axis (axial version) or from the curved surface of the cylinder (radial version). A gas fitting on the sensor allows the interior to be filled with a high dielectric strength gas (such as N2 or SF6) to prevent arcing in intense fields.

Data Specification Sheet

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